Sheave mounting



March 10, 1931. Q A, CANEY 1,795,760

SHEAVE MOUNTING' Filed Nov. 7, 1928 @AMM/ IN V EN TOR ATTORNEYS. Y.

Patented Mar. 10, 1931 'UNH CHAR-LES A. VCARNEY, OF ERIE, PENNSYLV PANY, OF ERIE, PENNSYLVANIA, A

conronarion vor rnNNsYnvANIa 1 i SHEAVE MUNT'rivG Application mea November 7, 192s. yserrer No. 317,851.1` "n Sheave mountings, such as are used in pulley blocks are subject to very severe use not only as to the. strains to which the block is usually subjected but in very many places to conditions such as the introduction of dirt and dust into the bearing. The present in vention is designed to improve the mounting for such sheaves and to prove means for preventing the introduction of dirt to the bearing surfaces. Features and details of the invention will appear from thespecilication and claims. f

A preferred embodiment of the invention is illustrated in the raccompanying drawings as follows z- .v Fig. 1 shows a section on the line' 1-1 in Fig. 2. v Fig. 2 a side elevation of a pulley block in hich is arranged the sheave mounting.

1 marks the pulley block cheeks, and 2 the Vsupportingpin, the pin being secured in the cheeks by set screws 1a.

A sheave pulley 3 is arranged'inthey block and mounted on a roller bearing 4;, the roller bearing comprising the outer sleeve 5, the inner sleeve 6, intervening rollers 7 and spacing i secured by screws 11 in plates'S, these sleeves, rollers and plates beingy a common roller bearing unit. y

Arranged within the sleeve 6 is a sleeve 9,

this sleeve being ordinarily fixed relatively to p the pin.'H n

A closure plate 10 in the form of a ring is the vpulley and at the ends of the bearing. A complementary plate 12 in the form of a ring is secured by screws 13 on the sleeve 9. These plates are provided with inter-related annular ribs and grooves on their opposing surfaces forming a laby-j rinth channel 141 between the surfaces, the outer end of the channel beingnearer the outer periphery of the plates and the inner end of this channel nearer the inner periphery of the plates.

An oil opening 15 is arranged at the axis of the pin 2 and is provided with a fitting 16 by means of which lubricant may be introduced into the opening 15 under pressure. Radial discharge passages 17 extend from the opening 15 to the surface of the pin and discharge into annular grooves 18 arranged in the passages 1'?,

vthe's'pace between ter-related axially STATES .'P'A'i* FFI-CEI AiviA, Asistieron: vTo yof. fwrLfLIMs v the sleeve 19 in' register with the'l passagesfl'?.

A'Discharge' openings 19 lead-from the grooves vv18 through the sleeve 9. Annularspaces 20 are arrangedbetween the inner sleevefof the l A:bearing 6 and the plates 12 whichare in communication with the discharge Vopenings l19.

nels 14. Y.

' will readily be seen' that as lubricant Yis forced intothe opening 15 Vit finds its Awayby grooves 18, f' openings 19,

spaces 20, passages'21 tothe inner termini of the channels.` frlhepassager21 not only-connects tothe channels but also to thespace` oc cupied by the rollers so:v that as lubricantis forced into thelopening 15Vit linds its wayinto the rollers and some of the Alubricant is rorced'iout'through-the channels 141 carrying with it any dirt that may 'have entered the outer part of the channels. f The ylabyrinth arrangement of the channels-prevents the ready working out ofthe lubricantv from this channel sealing` the-lubricant in these, channels during la normal use of the Zsheave.` f 1 What I claim las newfis 1. In a sheave mounting, the combinationV vofa sheave pulley; a pin on whichthe sheave ulley 'is mounted with'y a journal bearing between the pulley and pin ;4 and complementary closureplates at the ends ofthe bearing,

one rotatinglwithvthe pulley and the4 other locked with the pin, said plateshavingkinfaced lannular ribs` and grooves forming labyrinth channels between theplates. l

2. In a sheavefmounting, the combination Vof. a'sheave pulley; a pin on which the sheave pulley is mounted with a journal bearing between the'pulley and pin; complementary closure plates at the ends ofthe bearing, one rotating with the pulley and the other ter-related axially faced annular ribs and locked with the pin, said plates having inl under pressure to the bearing and the inner y termini of the channels.

3. In a sheave mounting, the combination of a sheave pulley; a pin on which the pulley is mounted with a journal bearing between the pulley and pin, said pin having oil passages terminating in radial discharges; a sleeve onthe pin havingan annular groove registering with the dischargepassages Jand discharge openings leading fromthe groove; and complementary closure plates at the ends of the bearing, one rotating with the pulley and the other locked-withthe pin,` said plates? having inter-related annular r1bsY and groovesforming labyrinth channels between the plates, the inner termini of the channels con'- necting with the discharge openings.

4. In a sheave mounting7 the combination of asheave pulley; a pin on which the shea-ve pulley is mounted witha roller hea-ring betweenthe pulley and pin; and complementary closure plates at the ends of the bearing,

one rotating. with the pulley and the other locked with the pin, said plates having interrelated axially faced annular ribs and grooves forming labyrinth channels between the plates.

5. In. a sheave 'mounting,. the combination ofa shea-ve pulley.; kazpinfon which the sheave pulleyiss'mountedrwith a roller bearing between the pulley and pin; complementary closure plates'at the endsof the bearing, one rotating with the pulley and the other locked with ythe pin, saidplates having inter-'related axially faced annular ribs and grooves formingxlabyrinth' channels4 between .the plates; and means deliveringlubricant under pres- 5 sure to the bearing and the inner'termini of the channels;

, 6.l In-afsheave mounting, thecombination of a sheave pulley; a pin on which the pulley is mounted with a roller bearing. between the pulley and pin, said pin having oil passages terminating in radial discharges; a sleeveon the pin having anwannular groove registering withthe dischargepassages anddischarge openings-leading'fromthe grooves; and complementary closure` plates at the ends of. the

bearings,.one.rotating` with the pulley and the other locked with the pin,.said. plates having inter-relatedannular ribs and grooves forming labyrinth channels between the plates, the inner termini of lthe .channels connecting with the discharge openings;`

In testimony whereof I have hereunto' set CHARLES A. eAnNEY.

my hand; 

